Inventions (1930 - 1940)

Polystyrene is a strong plastic created from erethylene and benzine that can be injected, extruded, or blow molded, making it a very useful and versatile manufacturing material.

Ballpoint pen - László Bíró

A vocoder, a portmanteau of the words voice and encoder, is an analysis and synthesis system, mostly used for speech. In the encoder, the input is passed through a multiband filter, each band is passed through an envelope follower, and the control signals from the envelope followers are communicated to the decoder. The decoder applies these control signals to corresponding filters in the (re)synthesizer. Research physicist Homer Dudley invented the Vocoder at Bell Labs in 1939 which served…

An eyelash curler is a hand-operated mechanical device for curling eyelashes for cosmetic purposes. The earliest patent for an eyelash curler was filed on August 15, 1929 and issued to William E. McDonell and Charles W. Stickel of Rochester, New York on April 7, 1931

Electric pinball.

1937, Nylon.

Instant coffee

The Man Who Changed the Way We Write

U.S. patent drawing for the first successful ballpoint pen, invented by László Biró.

On October 22, 1938, Chester Carlson invented the photocopier! He tried to sell it to IBM, but they saw no use for something that simply made copies. #hindsight #inventions #xerox